The purpose of this study was two-fold: (1) demonstrate a technique that can be used to directly estimate the inertial properties of a below-knee prosthesis, and (2) contrast the effects of the proposed technique and that of using intact limb inertial properties on joint kinetic estimates during walking in unilateral, transtibial amputees. An oscillation and reaction board system was validated ...

This survey considered 598 arteriosclerotic amputees over a period of 9 years: 267 below-knee; 81 Gritti-Stokes; 195 above-knee; and 55 double amputees. A walking ability index (WAI) ranging from 1 for a normal gait to 6 for inability to walk was determined for these amputees by clinical grading at 3, 6, 9, and 12 months after prosthesis fitting. Amputees with the below-knee operation had bette...

Knee flexion to 24 degrees during early stance transforms kinetic energy into potential energy of a total center of mass (TCM) position. Flexion is controlled by the musculoligamentous apparatus. Reproduction of such flexion in a new single-axis prosthesis knee unit has minimized the metabolic energy cost to the patient by a more favorable use of gravity acting upon the prosthetic segments and ...

One hundred and three sequential Stanmore knee replacements were reviewed retrospectively on two occasions with a maximal follow-up period of nine years three months. This knee prosthesis, which is hinged, was successful in alleviating pain, stabilising an unstable knee and modestly increasing the arc of flexion. Walking capacity was increased and flexion contractures were reduced. There were s...

PURPOSE To compare the mid-term clinical outcomes in Indian patients after total knee arthroplasty (TKA) using a fixed- or mobile-bearing prosthesis. METHODS 120 consecutive patients (50 men and 70 women) aged 55 to 76 (mean, 63) years who had arthritis of the knee with similar deformity and range of motion were randomised to undergo TKA using a fixed- or mobile-bearing prosthesis. Patients w...

Background: External beam radiation therapy is often administered to patients implanted with silicone gel breast prosthesis. The aim of this study was to investigate the influence of silicone gel breast prosthesis on photon dose distributions. In the event of recurrence, the oncologist may be forced to irradiate through the prosthetic device. To quantify the dose enhancement or reduction below ...

rhroughout the United States and Canada an estimated 80 percent of all major elective civilian amputations result from ischemia. All but a relatively few involve the lower extremity. Significant improvements in below-knee prostheses and important advances in surgical and postsurgical management now allow amputation below the knee in a majority of patients. In a consecutive series of 96 unselect...

2 Director, Prosthetics Research Study, Seattle, Wash. AHE elective amputation must be considered plastic and reconstructive in nature. The need to create a dynamic and sensory motor end-organ should be foremost in the surgeon's mind in planning an amputation, and is emphasized here once more. The below-knee stump no longer hangs suspended in an open-end socket. The variable degrees of pressure...

Introduction Lower-extremity amputees, the group with which this paper is concerned, include persons who have been subjected to gross anatomic loss of the lower limbs at widely varying levels, such as partial foot amputation, below-knee and above-knee amputations, knee or hip disarticulation, and hemipelvectomy. Amputation at each level is attended by distinctive problems of functional loss, fi...

In recent decades amputee management has advanced significantly. With the ad­ vent of blood flow studies and new surgical procedures, more knee joints are being saved. Physical therapists, using ad­ vanced facilitation techniques such as pro­ prioceptive neuromuscular facilitation (PNF), are better able to restore limb strength, range of motion, and coordina­ tion. Advances in the field of pros...